i just got a 95 sportster that the speedo wasnt working on. i thought the sensor may have just been dirty so i removed it cleaned it and put it back in but that made no difference. i also checked the plug connections to make sure they were clean and tight. i looked for the fuse box but only found the 4 relays under the seat. i swapped the accessory one for the instrument one and still didnt have any luck. my tach works fine my speedo just doesnt move off of zero. where do i need to look for the cause of my problem?